package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

@RestController
@RequestMapping("/dish")
@Slf4j
public class DishController {

    @Autowired
    private DishService dishService;

    @Autowired
    private DishFlavorService dishFlavorService;

    @Autowired
    private CategoryService categoryService;

    /**
     * 新增菜品
     *
     * @param dishDto
     * @return
     */
    @PostMapping
    public R save(@RequestBody DishDto dishDto) {
        log.info(dishDto.toString());
        dishService.saveWithFlavor(dishDto);
        return R.success("新增菜品成功");
    }

    /**
     * 菜品信息分页查询
     *
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R getByPage(int page, int pageSize, String name) {
        //构造分页构造器对象
        Page<Dish> pageInfo = new Page<>(page, pageSize);
        Page<DishDto> dishDtoPage = new Page<>();
        //条件构造器
        LambdaQueryWrapper<Dish> lqw = new LambdaQueryWrapper<>();
        //添加过滤条件
        lqw.like(name != null, Dish::getName, name);
        //添加排序条件
        lqw.orderByDesc(Dish::getUpdateTime);
        //执行分页查询
        dishService.page(pageInfo, lqw);
        //对象拷贝
        BeanUtils.copyProperties(pageInfo, dishDtoPage, "records");
        List<Dish> records = pageInfo.getRecords();
        List<DishDto> list = records.stream().map((item) -> {
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item, dishDto);
            Long categoryId = item.getCategoryId(); //分类id
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);
            if (category != null) {
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            return dishDto;
        }).collect(Collectors.toList());

        dishDtoPage.setRecords(list);
        return R.success(dishDtoPage);
    }

    /**
     * 根据id查询菜品信息和对应的口味信息
     *
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R updateDish(@PathVariable Long id) {
        DishDto dishDto = dishService.getByIdWithFlavor(id);
        return R.success(dishDto);
    }

    /**
     * 修改菜品
     *
     * @param dishDto
     * @return
     */
    @PutMapping
    public R update(@RequestBody DishDto dishDto) {
        log.info(dishDto.toString());
        dishService.updateWithFlavor(dishDto);
        return R.success("修改菜品成功");
    }

    /**
     * 起售/停售 批量起售/批量停售
     * @param ids
     * @param status
     * @return
     */
    @PostMapping("/status/{status}")
    public R updateStatus(@RequestParam List<Long> ids, @PathVariable Integer status) {
        LambdaUpdateWrapper<Dish> lqw = new LambdaUpdateWrapper<>();
        lqw.set(Dish::getStatus, status);
        lqw.in(Dish::getId, ids);
        dishService.update(lqw);

        /*for (Long id : ids) {
            Dish dish = new Dish();
            dish.setId(id);
            dish.setStatus(status);
            dishService.updateById(dish);
        }*/
        return R.success("操作成功");
    }

    /**
     * 删除/批量删除
     * @param ids
     * @return
     */
    @DeleteMapping
    public R delete(@RequestParam List<Long> ids){
        boolean result = dishService.deleteWithFlavor(ids);
        return result? R.success("删除成功"):R.error("当前菜品正在启售中或包含于套餐中,无法删除!");
    }

    /**
     *
     * @param dish
     * @return
     */
    @GetMapping("/list")
    public R list(Dish dish){
        LambdaQueryWrapper<Dish> lqw = new LambdaQueryWrapper<>();
        lqw.eq(Dish::getStatus,1);
        lqw.eq(Dish::getCategoryId,dish.getCategoryId());
        List<Dish> list = dishService.list(lqw);
        list = list.stream().map((item)->{
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item,dishDto);

            LambdaQueryWrapper<DishFlavor> flavorlqw = new LambdaQueryWrapper<>();
            flavorlqw.eq(DishFlavor::getDishId,item.getId());
            List<DishFlavor> flavors = dishFlavorService.list(flavorlqw);
            dishDto.setFlavors(flavors);
            return dishDto;
        }).collect(Collectors.toList());

        return R.success(list);
    }
}
